Abstract

Geochemical review of Pleistocene sediments from the Indian Ocean has been performed based on reports of deep-sea drilling cruises and other literature references. We created the data base including more than 2000 chemical analyses of sediment samples. As result we compiled a number of tables concerning the mean ariphmetic composition of lithogenic and biogenic sediments. All data have been normalized on PAAS (PostArchean Australean shales). We revealed the dominant role of terrigenous clastics in formation of chemical composition of noncarbonate sediments and noncarbonated matter of planktic carbonates as well. Main geochemical associations have been established together with three main factors determinating sediment composition: terrigenous, carbonate and hydrogenous. We managed to calculate meanwheighted chemical composition, accumulation rates of elements in the studied sediments and their mass accumulation rates. All these parameters of the chemical composition can be used later for comparative analysis with analog para-meters from other ocean sediments within frames of Pleistocene straton in the World Ocean.

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